The News-Herald. [volume] (Hillsboro, Highland Co., Ohio) 1886-1973, 1887-07-07
AMONG THE SCIENTISTS.
Subjects Interesting Specialists Thrsu9A.
out the Entire World. 80

out the Entire World
The Natural History Museum had .
spring opening, which took place about IN
middle of May. The most noted among ~
new exhibits, and which created considerable
attention on the opening day, was a collectiou
OF Dirds, consisting of eighteen groups, each
representing pair of birds-with their ncstn
and the eggs or young-of the different yarie-
ties found within fifty miles of New York. II
Is the first collection of its kind in this country.
An interesting series of experiments
has been by DIR. J. W. Fraser ON the In.
nuence of our common beverages on digestion.
among these drinks he finds that water Is usuz-
ally the best. OF infnsons tea or cocoa actn
most favorably when bread Is eaten, and coffee
Is the best for Use with meat or eggs. Eggs are
the best animal food with infused beverages
ana should be soft boiled when tea Is tho bev.
erage and hard boiled with coffee or cocoa
Charles Brush built some time ago Q
powerful dynamo for use in Cowles. Ala, for
disengaging aluminium from clay 80 economic
cally as to make the metal an article of COM
merce. contemporary says this dynamo
weighs 2,OOO pounds, requires 5OO.horse power
Tor It's operation, and has an arma1ure of forty
seven inches diameter, in the making of which
6'"5o pounds of copper wire were used.
The New York Electrical Society are
to make grand display at the American Insti.
tute Exhibition next autumn. The exhibition
Will include all that is newest, and special and
interesting feature will be the storage of cleo
thcity and its application to the transmission
of power. This promises to be the best slectri-
cal exhibition ever held in this country.
A substance resembling ivory of creamy
whteness and great hardness is made from po-
tatoes washed in diluted sulphurio acid, then
boiled In the same solution until they become
solid and dense. They are then washed free
from the acid and slowly dried. This ivory
can be dyed and turned and made useful Ia
many ways.
A temperature of $40 degrees win pro.
duce dark blue color on polished steel, and
toO degrees pale blue. The temper for hn-
Gets is obtained at 40 degrees Fahrenheit,
axes at 6OO degrees, swords and watch springs
at $50 degrees, small saws at SO degrees, and
large saws at 500 degrees.
A new discovery is that by the use Of
citric acid or citrate Of silver seawater may b
made drinkable. BY this means chloride Of
silver is precipitated and a harmless mineral
water Is produced. An ounce Of citrate makes
a half pint of water drinkable.
Geo. E. Doering, Phi. D., says that an
alcoholic solution of oil of wintergreen rubbed
on the marble slab of soda fountain will keep
the flies away and not prove disagreeable to
customers. 1t is well known that all essential
oils are poisonous to insects.
A San Francisco concern is making
handsome pressed bricks out Of coal ashes and
cinders. These bricks have stood the severest
tests for strength, and are made without bak-
ing or burning.
1t is curious scientific fact that all
the elements Of the poison found in rattle
snake are Inherent in the common Irish potato.